3+7n=45

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Solution for 3+7n=45 equation: 


Simplifying
3 + 7n = 45

Solving
3 + 7n = 45

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + 7n = 45 + -3

Combine like terms: 3 + -3 = 0
0 + 7n = 45 + -3
7n = 45 + -3

Combine like terms: 45 + -3 = 42
7n = 42

Divide each side by '7'.
n = 6

Simplifying
n = 6

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